1,721,157 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Cardiovascular modelling and simulation: clinical application and education
No full textKardiovaskuläre (CV) Erkrankungen sind hauptverantworlich für die Mortalität in den OECD Mitgliedsstaaten. Weltweit leiden rund 1 Milliarde Menschen an Bluthochdruck, dem wichtigsten unabhängigen Risikoindikator für CV Ereignisse (z. B. Herzinfarkt, Hirnschlag).Unglücklicherweise können nur rund 50 Prozent der einschlägigen Todesfälle mit Bluthochdruck in Zusammenhang gebracht werden. Als dynamischer und vom Blutdruck unabhängiger Risikoindikator für CV-Erkrankungen gilt bspw. die arterielle Steifigkeit. Fokus dieser Arbeit war die Entwicklung von Algorithmen zur Messung von funktionellen kardiovaskulären Parametern, deren klinische Anwendung, sowie die Übertragung der gewonnenen Erkenntnisse in die Ausbildung junger Mediziner und Techniker. Neben der Entwicklung und Anwendung stellt die Validierung der vorgestellten Ansätze in Klinik und Lehre den zweiten Schwerpunkt der Arbeit dar. Technisch lag das Haupaugenmerk auf der Erweiterung einfach anzuwendender Standardmessmethoden, im Speziellen der oszillometrischen Blutdruckmessung. Mathematisch waren die Gleichungen zur Pulswellenmodellierung von Navier-Stokes in ihrer linearen Darstellung nach Womersley und die Windkesselgleichungen nach Frank zur Modellierung des ventrikulären Submodells dominant. Das pädagogische Konzept orientierte sich am Lerner-Centered-Design, einer Methode die unterschiedliche Ansätze vereint, wie etwa selbstständiges Arbeiten oder aktive Lernstrategien. Der Lehrinhalt wurde speziell auf die Zielgruppe abgestimmt und unterstützt komplexe Visualisierungen, sowie aktive Feedbackschleifen. Abschließend wurde sowohl die klinische Leistungsfähigkeit der Algorithmen, als auch der pädagogische Nutzen der Lernmodelle in Feldversuchen untersucht. In beiden Fällen konnte statistische Signifikanz im positiven Sinne belegt werden.Cardiovascular (CV) disease is the leading origin for morbidity and mortality in OECD countries. Worldwide about 1 billion people suffer from hypertension, which is the most important independent risk indicator for CV events. Unfortunately only 50% of CV death can be predicted by hypertension. Arterial stiffness within the Aorta turned out to be a significant predictor and may help to overcome existing diagnostic shortenings.One aim of this work was the development of algorithms for measuring functional CV parameters, their clinical application and their use in medical education. The second goal of this work was the validation of the proposed approaches in clinical and educational practice.Technical implementation was intented on affordable standard platforms like common oscillometric measurement systems using an occlusive blood pressure cuff. The governing equations were those developed by Navier and Stokes and their linear solution published by Womersley as well as the Windkessel equation introduced by Frank to model the ventricular sub system.The principles behind the pedagogy included learner-centered design, which integrates self-exploration, active and meaningful learning strategies, motivational media, and visual teaching. The content was designed for end-users to visualize principles, to make predictions and to learn problem-solving skills with a hands-on approach, which allows to apply and test scientific methodologies and to see immediate outcomes from interactive manipulations. Finally field trials for both the clinical performance of the algorithms as well as the learning performance of simulation software were performed and showed significant positive statistical results
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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